TPS74801-Q1
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SLVSAI4A –OCTOBER 2010–REVISED FEBRUARY 2011
TYPICAL CHARACTERISTICS
At TJ = +25°C, VIN = VOUT(TYP) + 0.3V, VBIAS = 5V, IOUT = 50mA, VEN = VIN, CIN = 1μF, CBIAS = 4.7μF, and COUT = 10μF,
unless otherwise noted.
VIN LINE REGULATION
VBIAS LINE REGULATION
0.20
0.15
0.10
0.05
0
0.5
0.4
0.3
-40°C
0.2
-40°C
0.1
0
+25°C
+125°C
-0.1
-0.2
-0.3
-0.4
-0.5
-0.05
-0.01
-0.15
-0.20
+125°C
+25°C
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
IN - VOUT (V)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
V
VBIAS - VOUT (V)
Figure 3.
Figure 4.
LOAD REGULATION
LOAD REGULATION
1.2
1.0
0.8
0.6
0.4
0.2
0
0.5
0.4
0.3
0.2
+125°C
0.1
0
-40°C
+25°C
-0.1
-0.2
-0.3
-0.4
-0.5
0
10
20
30
IOUT (mA)
40
50
0.05
0.5
1.0
1.5
IOUT (A)
Figure 5.
Figure 6.
VIN DROPOUT VOLTAGE vs
IOUT AND TEMPERATURE (TJ)
VIN DROPOUT VOLTAGE vs
(VBIAS – VOUT) AND TEMPERATURE (TJ)
100
90
80
70
60
50
40
30
20
10
0
200
IOUT = 1.5A
180
160
140
120
100
80
+125°C
+125°C
+25°C
+25°C
60
40
-40°C
-40°C
20
0
0
0.5
1.0
1.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
IOUT (A)
VBIAS - VOUT (V)
Figure 7.
Figure 8.
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